Enclosure Heaters – TEF 9207 Series

Self-Regulating Climate Protection for Electrical Enclosures

The TRANBERG® TEF 9207 Enclosure Heater is designed to protect sensitive electrical, mechanical, and electronic equipment inside cabinets and enclosures from condensation, corrosion, and freezing. Built in AISI 316L stainless steel for maximum durability and corrosion resistance, the TEF 9207 offers a self-regulating heating element that prevents overheating, reduces energy consumption, and requires minimal maintenance.

This product series is certified for use in Zone 1, Zone 2, and Safe Areas, and is available in multiple configurations:

• With flying lead (100W–500W)

• With Ex e junction box (100W–1000W)

• With junction box and thermostat (100W–1000W, +5°C or +15°C ambient settings)

Each variant provides flexible integration into new or retrofit systems, ensuring stable operation even in the most demanding environments.

Applications

• Electrical cabinet heating

• Frost protection for control panels

• Condensation prevention in offshore and industrial settings

• Safe operation in hazardous gas zones

Key Features

• Material: AISI 316L (EN 1.4404) stainless steel

• Self-regulating: Automatically adjusts output with temperature

• Power range: 100W to 1000W (depending on model)

• Ingress protection: IP66

• Ambient temperature range: –50°C to +50°C

• Mounting: M6 screw holes on back; optional sandwich brackets

• Certifications:

  • ATEX: CML 22ATEX3623X

  • IECEx: IECEx CML 22.0096X

• Thermostat option: Ambient sensing, +5°C or +15°C with hysteresis